Numberphile revived an ancient multiplication trick—halves and doubles—also called Egyptian or Russian math, where you repeatedly halve one number and double the other. After crossing out rows with ...

We’ve often noted that whether had ancient man known binary, we could all count to 1023 on our fingers. We thought about that while watching [Numberphile’s] latest video about “Russian” multiplication ...

The National Science Foundation has just awarded a five-year, $2 million grant for U.S. researchers to study the use of a mathematics curriculum developed in Russia that aims to teach elementary ...

Here’s what you’ll learn when you read this story: To do the method, begin by writing the two numbers you want to multiply at the top of two columns. In the left column, you progressively halve the ...